JP5418758B2 - Motorcycle headlights - Google Patents

Description

  The present invention relates to a two-wheeled vehicle headlamp, and more particularly to a twin-lens shaped two-wheeled vehicle headlamp.

  Patent Document 1 discloses a two-lens shape two-wheeled vehicle headlamp.

  This two-wheeled vehicle headlamp has a pair of light sources, each light source having a major axis in a direction intersecting the illumination direction of the lamp, and a light source disposed on the top and bottom, and the illumination of the vehicle lamp from the light source. Is provided below the optical axis extending in the direction, and has a symmetrical shape with respect to the optical axis, and each has a focal point in the vicinity of the light source so as to reflect the light from the light source toward the irradiation direction of the vehicular lamp. A first reflecting surface that is a pair of paraboloid systems set, and a shape that is symmetrically provided with respect to the optical axis, is provided above the optical axis, and emits light from the light source with respect to the irradiation direction of the vehicular lamp. A second reflecting surface having a pair of elliptical systems each having a first focal point set in the vicinity of the light source and having a major axis laterally outward with respect to the optical axis so as to be reflected toward the left and right sides; The shape is symmetrical with respect to the optical axis, and the light reflected by the second reflecting surface is directed in the illumination direction of the vehicular lamp. To reflect Te, respectively and a pair of paraboloidal third reflecting surface of which is set a second focal point of the second reflecting surface as a focus.

  Further, the two-wheeled vehicle headlamp is a pair of light beams that are emitted from the second light source and reflected by the second reflecting surfaces to cut off part of the light directed to the third reflecting surfaces, thereby forming a cutoff. A shutter is provided.

  According to the two-wheeled vehicle headlamp of Patent Document 1, the light emitted upward from the second light emitting source is reflected from the second reflecting surface by the third reflecting surface, becomes substantially parallel light, and in the light irradiation direction. Irradiated. In this case, a part of the light from the second light emitting source is blocked by the shutter on the way from the second reflecting surface to the third reflecting surface. Thereby, a light distribution pattern of a passing beam is formed by the light emitted from the second light emitting source.

That is, since the two-wheeled vehicle headlamp of Patent Document 1 uses an elliptical reflecting surface as the second reflecting surface, the position of the light distribution pattern when the light source is switched is the first reflecting portion below the light source. And in the opposite direction. That is, when switching from the low beam to the traveling beam, the light distribution pattern is formed under the light distribution pattern of the low beam by the light on the upper side of the light source, and thus a light distribution pattern suitable for the traveling beam cannot be obtained.
Japanese Patent Application Laid-Open No. 2008-243795

  As described above, the two-wheeled vehicle headlamp of Patent Document 1 uses an elliptical reflecting surface as the second reflecting surface. Therefore, when switching from a passing beam to a traveling beam, the light on the upper side of the light source causes the passing of the passing beam. A light distribution pattern is formed below the light distribution pattern. For this reason, the light distribution pattern suitable for the traveling beam cannot be obtained.

  The present invention has been made in view of such circumstances, and provides a twin-lens shaped headlight for a motorcycle that can obtain an appropriate light distribution when switching from a passing beam to a traveling beam. With the goal.

  In order to achieve the above object, the present invention provides a light source having a pair of light emitting sources having a longitudinal direction in the horizontal direction and juxtaposed in a vertical direction, a symmetrical position between the light sources and a light source. A first reflecting surface that reflects the direct light of the light source forward and in the left-right direction, and a paraboloidal system that is disposed outside the first reflective surface and reflects the direct light from the light source forward of the light source. A second reflecting surface, a third reflecting surface of a parabolic system that reflects light above the light source substantially horizontally symmetrically in the left-right direction, and a parabolic column surface that reflects the reflected light from the third reflecting surface forward A motorcycle headlamp characterized by comprising a fourth reflecting surface.

  According to the present invention, since the third reflecting surface is not an elliptical reflecting surface but a parabolic reflecting surface that emits parallel light, the position of the light distribution pattern when the light source is switched from the passing beam to the traveling beam. However, it is not in the opposite direction to the first reflecting surface and the second reflecting surface on both sides of the light source, and an appropriate light distribution is obtained. Therefore, according to the two-wheeled vehicle headlamp of the present invention, it is possible to obtain an appropriate light distribution when switching from the passing beam to the traveling beam.

Further, according to the present invention, a pair of outgoing light of the light source is a first shot light source below the emission source forms a light distribution pattern for high beam, the upper light-emitting source is low-beam light distribution It is preferable that it is the 2nd light emission source which forms a pattern.

  According to the present invention, at the time of traveling beam, the first light source of the light source emits light, and the light emitted to the left and right is reflected by the corresponding first reflection surface and second reflection surface, respectively, so that it is substantially parallel light. It is irradiated toward the light irradiation direction. Also, light emitted from the light source toward the left and right on the upper side is reflected by the corresponding third reflecting surface to become parallel light, is incident on the corresponding fourth reflecting surface, and is reflected by these third reflecting surfaces. As a result, the light is substantially collimated and irradiated in the light irradiation direction.

  On the other hand, in the case of a passing beam, the light emitted from the second light source of the light source and emitted to the left and right is reflected by the corresponding first reflecting surface and the second reflecting surface, respectively, so that appropriate downward parallel light is obtained. The light is irradiated toward the light irradiation direction. In addition, the light emitted from the light source toward the left and right on the upper side is reflected by the corresponding third reflecting surface to become parallel light, enters the corresponding fourth reflecting surface, and is reflected by these fourth reflecting surfaces. Thus, the light becomes substantially parallel light and is irradiated forward in the light irradiation direction. At the time of passing beam, the light source image of the second light emitting source is irradiated slightly obliquely downward in front of the light irradiation direction, and the entire light distribution pattern is formed slightly below.

  According to the present invention, switching between the traveling beam and the passing beam can be easily performed by using a so-called double filament type valve. The light source is arranged so that each of the first light emission source and the second light emission source has a long axis in a direction intersecting the light irradiation direction. That is, each light emitting source is disposed transversely to the light irradiation direction. Therefore, the light source images can be arranged in the light irradiation direction while being long in the left-right direction, and the light can be concentrated in the vicinity of the center of the horizontal line, and optimal light distribution characteristics can be obtained for the traveling beam and the passing beam.

Further, according to the present invention, the first reflecting surface, the cross-sectional shape has a first focal point in the vicinity of the first shot light source, organic a position away in the lateral direction of the second focal point from the light source forward The optical axis is formed in an elliptical shape in the outer direction, the longitudinal cross-sectional shape in the reflected light direction is a parabola shape, and the light emitted from the light source is uniformly distributed in the left and right outer directions from the optical axis direction, The vertical direction is preferably a reflective surface that irradiates substantially in parallel.

  Furthermore, it is preferable that the second reflecting surface is a parabolic reflecting surface having a focus on the first light emitting source, and is a reflecting surface that irradiates light from the first light emitting source in parallel in the forward direction. .

  The third reflecting surface is a parabolic reflecting surface that has a focal point near the first light emitting source and reflects the light above the light source in parallel in the left-right direction, and a plurality of rotating paraboloid surfaces. Each of the reflecting surfaces in the reflecting surface group is a parabolic reflecting surface having a focal point near the first light emitting source and having different optical axis directions. The axis is a reflecting surface that intersects at a predetermined point in the left-right direction, and the fourth reflecting surface is a vertical parabolic column surface that reflects light from the reflecting surface group of the third reflecting surface forward. It is a reflective surface, and it is preferable to have a focal point near the optical axis intersection of the reflective surface group of the third reflective surface.

  According to the two-wheeled vehicle headlamp of the present invention, the first reflecting surface is reflected so that the light from the light source is condensed at the second focal position separated from the front of the light source in the left-right direction in the cross section, and the optical axis direction The light from the light source is uniformly distributed outward from the left and right. The first reflecting surface reflects light from the light source substantially in parallel in the longitudinal section in the direction of the reflected light beam. The second reflecting surface irradiates the left and right light from the first light emitting source in parallel in the forward direction. On the other hand, each reflecting surface constituting the reflecting surface group of the third reflecting surface reflects the light from the first light emitting source in parallel toward a predetermined substantially one point in the left-right direction. And a 4th reflective surface reflects the parallel light reflected in the reflective surface group of the 3rd reflective surface ahead in parallel. Thereby, the light from the light source for forming a running pattern can be effectively used without loss. In addition, when the light source that emits light is switched from the first light emission source to the second light emission source, the position of the light distribution pattern is shifted from the upper side to the lower side, as with the other first reflection surface and the second reflection surface. This is a light distribution pattern for passing beams. Therefore, according to the present invention, it is possible to provide an optimal light distribution pattern for both running and passing.

  As described above, according to the two-wheeled vehicle headlamp of the present invention, it is possible to obtain an appropriate light distribution when switching from a low beam to a traveling beam.

  Hereinafter, a preferred embodiment of a motorcycle headlamp according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing the configuration of a two-wheeled vehicle headlamp 10 according to the embodiment. FIG. FIG. 3 is a top view of the motorcycle headlamp 10.

  The two-wheeled vehicle headlamp 10 includes a bulb 12 as a light source, first reflecting surfaces 14 and 16, second reflecting surfaces 18 and 20, third reflecting surfaces 22 and 24, fourth reflecting surfaces 26 and 28, and a lens 30, 32. Further, the housing 34 that covers a portion other than the lenses 30 and 32 is formed of a light shielding member.

  In the two-wheeled vehicle headlamp 10, the members are symmetrically formed around the optical axis Ax of the bulb 12, that is, the reflecting surfaces 14 to 28 and the lenses 30 and 32 are disposed at the symmetrical positions. Yes. The right eye of the two-wheeled headlamp 10 is configured by the left reflecting surfaces 14, 18, 22, 26 and the lens 30 in the drawing, and the right reflecting surface 16, 20, 24, 28 and the lens 32 on the right side in the drawing are used for a two-wheeled vehicle. The left eye of the headlamp 10 is configured.

  The bulb 12 is a double filament type bulb generally used for an automobile headlamp, for example, a European standard C6 double filament bulb (HS5), and is composed of a halogen bulb having a known configuration. The bulb 12 is arranged so that its optical axis Ax is substantially horizontal toward the front of the light irradiation direction, is fixedly held by a socket, and emits light when electric power is supplied from the battery of the motorcycle.

  The bulb 12 has two light emission sources (filaments) 12a and 12b arranged vertically in parallel with the optical axis Ax, and each emits light selectively. Here, the lower first light emission source 12a is set as a traveling beam filament, and the upper second light emission source 12b is set as a low beam filament 12b. The passing beam filament 12b is positioned on the optical axis Ax, and the traveling beam filament 12a is positioned below the optical axis Ax. In addition, each of the light emitting sources 12a and 12b is arranged in a direction in which the major axis is substantially orthogonal to the optical axis Ax.

  The first reflecting surfaces 14 and 16 are arranged behind the bulb 12 and symmetrically about the optical axis Ax.

  Hereinafter, the first reflecting surface 16 of the left eye will be described. The first reflecting surface 16 is formed in a concave shape in the light irradiation direction so as to reflect the light emitted from the bulb 12 to the lower left hand side in the light irradiation direction. The first reflecting surface 16 has a cross-sectional shape that has a first focal point in the vicinity of the first light emitting source 12a of the bulb 12 and a second focal point separated from the front of the first light emitting source 12a in the left-right direction. It has an elliptical shape with the optical axis in the outer direction. Further, the first reflecting surface 16 has a parabolic shape in the longitudinal direction in the direction of reflected light, and directly distributes direct light from the first light emitting source 12a outward from the optical axis Ax direction, It is a reflective surface that irradiates substantially parallel.

  Furthermore, as shown in FIGS. 1 and 2, the first reflecting surface 16 is disposed with a predetermined width in the lateral direction below the optical axis Ax. The first reflecting surface 16 reflects light from the first light emitting source 12a located in the vicinity of the first focal position, so that a light distribution pattern optimum for the traveling beam, that is, a light distribution having a high luminous intensity near the center. Form a pattern. The light from the vicinity of the second light emitting source 12b located on the optical axis Ax of the bulb 12 is reflected by the first reflecting surface 16 and is irradiated below the horizontal line in the light irradiation direction. At that time, a cutoff is formed by projecting the light source image.

  Similarly, the second reflecting surfaces 18 and 20 are arranged at symmetrical positions around the optical axis Ax.

  Hereinafter, the second reflecting surface 20 of the left eye will be described. The second reflecting surface 20 is a reflecting surface that curves continuously forward from the first reflecting surface 16, and is a parabolic reflecting surface that has a focal point on the first light emitting source 12a. Therefore, the second reflecting surface 20 irradiates the light from the first light emitting source 12a in parallel forward.

  Similarly, the third reflecting surfaces 22 and 24 are arranged at symmetrical positions around the optical axis Ax.

  Hereinafter, the third reflecting surface 24 of the left eye will be described. As shown in FIGS. 1 and 3, the third reflecting surface 24 has a first focal point that reflects the light emitted from the bulb 12 to the upper left hand side in the lateral direction, that is, parallelly toward the left direction. This is a parabolic reflecting surface located in the vicinity of the second light emitting source 12b. The third reflecting surface 24 is configured by a reflecting surface group in which a plurality of rotating paraboloids are gathered. Each of the strip-like reflecting surfaces 24a, 24a,... Shown in FIGS. 1 to 3 of this reflecting surface group is a reflecting surface of a paraboloidal system having a focal point near the second light emitting source 12b and having different optical axis directions. There is a reflection formed such that their optical axes intersect at a predetermined substantially one point in the left direction (F1: see FIG. 3) at a spatial position between the third reflecting surface 24 and the fourth reflecting surface 28. Surface. Therefore, the parallel light reflected by the reflecting surfaces 24a, 24a... On the respective paraboloids of the third reflecting surface 24 intersects each parallel light from each paraboloid at the predetermined substantially one point (F1). Then, it faces the fourth reflecting surface 26.

  Similarly, the fourth reflecting surfaces 26 and 28 are arranged at symmetrical positions around the optical axis Ax.

  Hereinafter, the fourth reflecting surface 28 of the left eye will be described. The fourth reflecting surface 28 is a reflecting surface of a vertical parabolic pillar surface that reflects light reflected leftward from the third reflecting surface 24 in the light irradiation direction, and the light of the reflecting surface group of the third reflecting surface 24. This is a reflecting surface having a focal point in the vicinity of the axis intersection (predetermined approximately one point (F1)). Of the parallel light flying from the third reflecting surface 24, the light passing through the focal point F1 remains as the parallel light along the light irradiation direction even if it is reflected by the fourth reflecting surface 28, but deviates from the focal point F1. When the reflected light is reflected by the fourth reflecting surface 28, it becomes diffused light spreading in the left-right direction as indicated by an arrow a in FIG.

  As shown in FIGS. 1 and 3, the fourth reflecting surface 28 is disposed on the upper side with respect to the optical axis Ax on the laterally outer side of the first reflecting surface 16 and the second reflecting surface 20. The fourth reflecting surface 28 reflects the parallel light incident from the second light emitting source 12b via the third reflecting surface 24, and is optimal for the light distribution pattern for the low beam, that is, left and right below the horizontal line. A slightly diffused light distribution pattern is formed.

  Further, at the time of switching between the passing beam and the traveling beam, the light distribution pattern of the fourth reflection surface 28 is formed in the same direction as the light distribution patterns of the first reflection surface 16 and the second reflection surface 20.

  Further, the vertical widths of the irradiation light obtained from the first reflection surface 16, the second reflection surface 20, and the fourth reflection surface 28 are substantially the same, but the first reflection surface 16 has the same horizontal spread of the irradiation light. Next is the fourth reflecting surface 28, and the second reflecting surface 20 is the smallest.

  Similarly, the front lenses 30 and 32 are arranged symmetrically with respect to the optical axis Ax.

  Hereinafter, the left-eye lens 32 will be described. The lens 32 is made of a translucent material such as plastic, and protects the corresponding reflecting surfaces 16, 20, 24, and 28, respectively. Moreover, it is comprised as a design window for improving the appearance appearance. The lenses 30 and 32 are mounted symmetrically on the left and right sides of the housing 34 to form a twin-lens headlamp.

  Next, the operation of the motorcycle headlamp 10 configured as described above will be described.

  When electric power is supplied from the battery of the motorcycle to the bulb 12, light is emitted from the first light emission source 12a or the second light emission source 12b of the bulb 12. Of the light emitted from the bulb 12, the light emitted downward is reflected by the first reflecting surfaces 14 and 16 and the second reflecting surfaces 18 and 20 and irradiated in the light irradiation direction. Of the light emitted from the bulb 12, the light emitted above it is reflected by the third reflecting surfaces 22 and 24, further reflected by the fourth reflecting surfaces 26 and 28, and irradiated in the light irradiation direction. . At this time, the light reflected by the reflecting surfaces 14, 18, and 26 is radiated to the outside via the lens 30, and the light reflected by the reflecting surfaces 16, 20, and 28 is radiated to the outside via the lens 32.

  Here, when the traveling beam is selected, the first light emission source 12a of the bulb 12 emits light. The light emitted downward from the first light emitting source 12a is reflected by the first reflecting surfaces 14 and 16 and the second reflecting surfaces 18 and 20, and becomes substantially parallel light, and is irradiated in the light irradiation direction through the lenses 30 and 32. Is done. In this case, the light from the first light emission source 12a of the bulb 12 is incident on the first reflection surfaces 14 and 16 and the second reflection surfaces 18 and 20 without being shaded by the second light emission source 12b.

  Here, for example, each part of the first reflecting surfaces 14 and 16, that is, light reflected at positions indicated by reference signs A, B, and C in FIG. 4 are indicated by thin lines in FIGS. 5 (A) to (C), respectively. Thus, the light source image of the first light emission source 12a is projected. That is, as shown in FIG. 5A, a light source image L1a arranged in the horizontal direction near the horizontal line is formed by the light reflected by the region A near the optical axis Ax of the first reflecting surfaces 14 and 16.

  In addition, as shown in FIG. 5B, the light source image L1b aligned in the horizontal direction near the horizontal line as shown in FIG. 5B by the light reflected by the region B slightly separated from the optical axis Ax of the first reflecting surfaces 14 and 16 is formed. It is formed. Further, as shown in FIG. 5 (C), the light reflected by the region C near the first light emitting source 12a far from the optical axis Ax of the first reflecting surfaces 14 and 16 is similarly near the horizontal line as shown in FIG. A light source image L1c arranged in the horizontal direction is formed. Thereby, the optimal light distribution pattern for the traveling beam is formed by the light emitted downward from the first light emitting source 12a.

  Note that the light source images reflected by the second reflecting surfaces 18 and 20 and the fourth reflecting surfaces 26 and 28 are also light source images similar to the light source images shown in FIGS.

  Further, as shown in FIG. 1, the light L3 emitted upward from the first light emitting source 12a is reflected by the fourth reflecting surfaces 26 and 28 from the third reflecting surfaces 22 and 24, and is approximately with respect to the optical axis Ax. It becomes parallel light and is irradiated through the lenses 30 and 32 in the light irradiation direction. In this case, the third reflecting surfaces 22 and 24 are not elliptical reflecting surfaces but parabolic reflecting surfaces that irradiate parallel light, and the fourth reflecting surfaces 26 and 28 are parabolic column reflecting surfaces. Therefore, the position of the light distribution pattern of the traveling beam is not in the reverse direction to the first reflection surfaces 14 and 16 and the second reflection surfaces 18 and 20, and the light distribution is appropriate. As a result, as shown in FIG. 6A, a light distribution pattern DH optimum for a traveling beam having a high luminous intensity near the center is formed.

  On the other hand, at the time of the passing beam, the second light emission source 12b emits light. The light emitted downward from the second light emitting source 12b is reflected by the first reflecting surfaces 14 and 16 and the second reflecting surfaces 18 and 20, and becomes substantially parallel light, and in the light irradiation direction via the front lenses 30 and 32. Irradiated.

  Here, for example, the respective portions of the first reflecting surfaces 14 and 16, that is, the light reflected at the positions indicated by reference signs A, B, and C in FIG. 4 are indicated by thick lines in FIGS. Thus, the light source image of the second light emission source 12b is projected. That is, as shown in FIG. 5A, the light source image L2a aligned in the horizontal direction below the horizontal line is formed by the light reflected by the region A close to the optical axis Ax of the first reflecting surfaces 14 and 16. .

  Further, as shown in FIG. 5B, the light source image L2b that is closer to the horizontal line and aligned in the horizontal direction is formed by the light reflected by the region B slightly separated from the optical axis Ax of the first reflecting surfaces 14 and 16. Is done. Further, as shown in FIG. 5C, the light reflected by the region C near the lower side of the second light emitting source 12b far from the optical axis Ax of the first reflecting surfaces 14 and 16 is substantially horizontal in the vicinity of the horizontal line. A light source image L2c aligned in the direction is formed. Thereby, an optimal light distribution pattern for the passing beam is formed by the light emitted downward from the second light emitting source 12b.

  Further, as shown in FIG. 1, the light L4 emitted upward from the second light emitting source 12b is reflected by the third reflecting surfaces 22 and 24, and subsequently reflected by the fourth reflecting surfaces 26 and 28. Since the incident angle of the light L4 from the second light emitting source 12b to the third reflecting surfaces 22 and 24 is smaller than the incident angle of the light L3 from the light emitting source 12a to the third reflecting surfaces 22 and 24, the fourth The light L4 reflected by the reflecting surfaces 26 and 28 does not become substantially parallel light with respect to the optical axis Ax, but is distributed downward from the light emitted from the light L3, and in the light irradiation direction via the front lenses 30 and 32. Irradiated. The reason why the downward light distribution is formed is that the third reflecting surfaces 22 and 24 are not elliptical reflecting surfaces but parabolic reflecting surfaces that irradiate parallel light, and the fourth reflecting surfaces 26 and 28 are parabolic reflecting. The optical system is a combination of a parabolic columnar reflecting surface, not a surface. With this combination, the position of the light distribution pattern of the low beam is not opposite to that of the first reflective surfaces 14 and 16 and the second reflective surfaces 18 and 20, and is optimal for the low beam as shown in FIG. A light distribution pattern DL is formed. Further, unlike Patent Document 1, parts such as a shutter for forming a passing beam are not required, and light from the second light emitting source 12b does not need to be shielded by the shutter. Can also be increased.

  Here, in the two-wheeled vehicle headlamp of Patent Document 1, the second reflecting surface corresponding to the third reflecting surfaces 22 and 24 of the embodiment is an elliptical reflecting surface, and the third reflecting surface is a paraboloidal system. Because it is a combination of reflecting surfaces, when switching from a passing beam to a traveling beam, an appropriate traveling beam light distribution pattern cannot be obtained, and a shutter is provided to forcibly form a passing beam light distribution pattern. However, since the light from the second light emitting source directed upward is shielded, the light utilization rate of the light source at the time of passing the low beam has inevitably decreased.

  On the other hand, the third reflecting surfaces 22 and 24 of the two-wheeled vehicle headlamp 10 according to the embodiment are configured by reflecting surface groups that are divided into a plurality of narrow strips, and each of the reflecting surface groups. The reflecting surfaces 24a, 24a,... Have a focal point near the second light emitting source 12b and are parabolic reflecting surfaces having different optical axis directions. The reflecting surfaces intersected with each other.

  As a result, the position of the light distribution pattern when the light source is switched from the passing beam to the traveling beam is not opposite to the first reflecting surfaces 14 and 16 and the second reflecting surfaces 18 and 20 on both sides of the light source. It becomes light. Therefore, according to the two-wheeled vehicle headlamp 10 of the embodiment, it is possible to obtain an appropriate light distribution when switching from the low beam to the traveling beam, and it is not necessary to block the light of the light source with a shutter or the like. It is possible to provide a two-wheeled vehicle headlamp with a high light utilization rate of the light source.

  In the above-described embodiment, the two-wheeled vehicle headlamp has been described. However, the headlamp for a four-wheeled vehicle may be configured using the configuration of the present invention.

The perspective view which showed the structure of the two-wheeled vehicle headlamp of embodiment The front view of the two-wheeled vehicle headlamp which showed the lens and housing of the two-wheeled vehicle headlamp shown in FIG. 1 with the continuous line Top view of the motorcycle headlamp shown in FIG. The principal part expanded sectional view which shows the incident state of the light to the 1st reflective surface from the light source in the vehicle headlamp of FIG. The graph which showed the light source image by each part of the 1st reflective surface of FIG. The graph which showed the light distribution pattern at the time of the (A) driving | running | working beam and (B) passing beam by the vehicle headlamp of FIG.

  DESCRIPTION OF SYMBOLS 10 ... Motorcycle headlamp, 12 ... Bulb, 12a ... First light emission source, 12b ... Second light emission source, 14, 16 ... First reflection surface, 18, 20 ... Second reflection surface, 22, 24 ... Third reflecting surface, 26, 28 ... Fourth reflecting surface, 30, 32 ... Lens, 34 ... Housing

Claims (5)

A light source having a pair of light-emitting sources that have a longitudinal direction in the horizontal direction and are aligned vertically;
A first reflecting surface that is disposed in a symmetrical position across the light source, and reflects direct light from the light source in front of the light source in the left-right direction;
A second reflecting surface of a paraboloidal system that is disposed outside the first reflecting surface and reflects direct light from the light source forward of the light source;
A third reflecting surface of a paraboloidal system that reflects light above the light source substantially horizontally symmetrically in the left-right direction;
A fourth reflecting surface of a parabolic column that reflects the reflected light from the third reflecting surface forward;
A two-wheeled vehicle headlight characterized by comprising: A pair of outgoing light of the light source is a first shot light source below the emission source forms a light distribution pattern for high beam, a second shot light source above the light emitting source to form a light distribution pattern for low beam The two-wheeled vehicle headlamp according to claim 1. The first reflecting surface, the cross-sectional shape has a first focal point in the vicinity of the first shot light source has a second focal point from the light source forward position apart in the lateral direction, the optical axis and the outer direction The vertical cross-sectional shape in the reflected light direction is a parabolic shape, and the light emitted from the light source is uniformly distributed from the optical axis direction to the left and right outer sides, and the vertical direction is irradiated substantially in parallel. The headlight for a motorcycle according to claim 2 , wherein the headlight is a reflecting surface. 4. The second reflecting surface according to claim 2 or 3, wherein the second reflecting surface is a parabolic reflecting surface having a focus on the first light emitting source, and irradiates light from the first light emitting source in parallel in front. The motorcycle headlamp described. The third reflecting surface is a parabolic reflecting surface that has a focal point near the first light emitting source and reflects the light above the light source in parallel in the left-right direction, and a plurality of rotating paraboloids are assembled. Each reflecting surface of the reflecting surface group is a parabolic reflecting surface having a focal point near the first light emitting source and having different optical axis directions, and their optical axes are , A reflecting surface that intersects at a predetermined point in the left-right direction,
The fourth reflecting surface is a reflecting surface of a vertical parabolic column surface that reflects light from the reflecting surface group of the third reflecting surface forward, and near the optical axis intersection of the reflecting surface group of the third reflecting surface The two- wheeled vehicle headlamp according to claim 2 , 3 or 4, wherein the two-wheeled vehicle headlamp has a focal point.

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